长周期光纤光栅对铜离子的检测研究

The Monitoring of Cu^(2+) by Long Period Grating Sensor

利用有机反应在长周期光纤光栅表面制备了一层高分子材料敏感膜,用扫描电子显微镜(SEM)、X射线型能谱仪(EDX)等检测手段对高分子敏感膜层进行了分析表征,并利用敏感膜时溶液中的铜离子进行了光学检测。结果表明,该高分子敏感膜能够较好地确定铜离子的存在,证明了利用长周期光纤光栅对铜离子进行检测是可行的。

A polymer affinity coating was chemically coated to the surface of a long period grating （LPG）. The affinity coating was then characterized by scanning electron microscope （SEM） and energy dispersive X-ray detector （EDX）. Some optical tests were also made to testify the reliability of the LPG sensor. The results showed that the polymer affinity coating could be used to identify cupric ions. So it is feasible to monitor the concentration of cupric ions using LPG sensor.